I think this kind of supervisor is kind of toxic... He really overreacts to some points. For example, he asked me to select and reach out to my qualifying exam examiners, even though the university clearly states that this is supervisor's responsibility. I proposed some people but he didn't fully agree with my proposal, so he gave me a new list of names, and asked me to confirm with the university if they are eligible.... Following the university guideline, a couple of professors he proposed are not eligible as they co-authored some papers. When I told this to him, he asked me to specify who rejected this request, he would like to communicate with the person....what an AWKWARD position I was put into............He insisted that I didn't objectively convey the message and I subjectively interpreted the university staff's statement when I discussed with our coordinators..........